Early-est:     Northern Molucca Sea    2026.04.01-23:13:35.21    q:B      mb:5.1*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     fmamp_polarity_waveform:     hash:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 5.1* [26]    Mwp: - [0]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.04.01-23:13:35.21 UTC Hypocenter: lat: 1.17°  lon: 126.42°  [+/-15km]    depth: 80km  [+/-16km] Location Quality: qualityCode:  B     stdErr: 2.0s   assocPhases: 63   usedPhases: 37 minDist: 1.0°   maxDist: 146.4°   AzGap: 59°   2ndAzGap: 64°   atten: -1.35 [+/-0.24] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 141° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 321°   majorAxisPlunge: 16°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 153°   intermediateAxisPlunge: 74°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [14]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.3s [13] Closest plate boundaries:    Molucca Sea \ Sunda [subduction zone]: distance: ~40km    Molucca Sea \ Birds Head [subduction zone]: distance: ~40km    Birds Head / Sunda [subduction zone]: distance: ~60km    Molucca Sea / Sunda [subduction zone]: distance: ~120km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (40km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        80km        80km        80km Slab depth at epicenter:        n/a        -        - Tsunami and Rupture predictions (TEST!): No prediction: Event too small (Mwp<7.0) or too few Mwp readings (N<20)

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 64°   dip: 9°   rake: -138° Nodal Plane 2: strike: 292°   dip: 84°   rake: -83° Quality: azimuthalGap: -1°   stationPolarityCount: 24   misfitWeightCount: 8.5   misfit: 0.18   stationDistributionRatio: 0.58   meanDistP: 41.0   meanDistT: 42.0   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: 0° Nodal Plane 2: strike: 270°   dip: 90°   rake: 90° Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 326°   dip: 77°   rake: -126° Nodal Plane 2: strike: 218°   dip: 38°   rake: -22° Quality: azimuthalGap: 68°   stationPolarityCount: 24   misfit: 0.40   stationDistributionRatio: 0.76   rmsAngDiffAccPref: 41.49   fracAcc30degPref: 0.49   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775085217271
Event info last updated: 2026.04.02-00:12:00 UTC
Event first association/location: 2026.04.01-23:20:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA